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Finding the Fourth Proportional to 211,370.30, 317,055.45 and 71,114.30

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Solution

The fourth proportional to 211,370.30, 317,055.45 and 71,114.30 is: 106,671.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,370.30 : 317,055.45 = 71,114.30 : x
  2. Step 2: Convert to fraction form
    211,370.30/317,055.45 = 71,114.30/x
  3. Step 3: Cross multiply
    211,370.30x = 317,055.45 × 71,114.30
  4. Step 4: Simplify right side
    211,370.30x = 22,547,176,387.94
  5. Step 5: Solve for x
    x = 22,547,176,387.94/211,370.30
  6. Step 6: Final answer
    x = 106,671.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.